I recently read a book that was entirely about snow crystals, more familiarly known as snowflakes. It was fascinating, and made me realize this common fluffy stuff is way overlooked--literally. Do yourself a favor. Get a magnifying glass and step outside someday with it and a piece of dark paper to catch the crystals on. Look at them closely. The big fluffy ones are merely clusters of smaller stars. Individual stars are amazing. Be patient. Many are broken. They melt quickly. If you don't gasp at the beauty, or even wonder at their symmetry, you have my deepest sympathies.